package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.controller.admin.CommonController;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.apache.tomcat.util.http.fileupload.util.LimitedInputStream;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
//添加事件提交的注解
@Slf4j
@Transactional
@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    //添加菜品
    @Override
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dish.setStatus(StatusConstant.ENABLE);
        List<DishFlavor> flavors = dishDTO.getFlavors();
        dishMapper.insert(dish);
        log.info("添加菜品的Id：{}",dish.getId());
        Long dishId = dish.getId();
        if (flavors!=null && flavors.size()>0)
        {
            for (DishFlavor flavor : flavors) {
                flavor.setDishId(dishId);
            }
            dishFlavorMapper.insertBatch(flavors);
        }
    }
    //菜品分页查询

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }
    //更新菜品

    @Override
    public void update(Integer status, Long id) {
        Dish dish = Dish.builder()
                .id(id)
                .status(status)
                .build();
                dishMapper.update(dish);
    }

    public void deleteBatch(List<Long> ids) {
        //判断菜品状态能否删除，看是否起售
        for (Long id : ids){
            Dish dish = dishMapper.getDIsh(id);
            if (dish.getStatus()== StatusConstant.ENABLE){
                 throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        //判断菜品当前是否被套餐关联，若关联则不能被删除
        List<SetmealDish> setmealDishes = setmealDishMapper.getSetmealByDishId(ids);
        if (setmealDishes!=null && setmealDishes.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        //删除菜品
        dishMapper.deleteBatch(ids);
        dishFlavorMapper.deleteFlavorBatch(ids);
        //删除菜品关联的口味数据
    }

    public DishVO getByIdWithFlavor(Long id) {
        //根据id查询菜品数据
        Dish dish = dishMapper.getDIsh(id);
        List<DishFlavor> dishFlavors = dishFlavorMapper.getDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        Long dishId = dishDTO.getId();
        dishFlavorMapper.deleteFlavorBatch(Collections.singletonList(dishId));
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null && flavors.size()>0)
        {
            for (DishFlavor flavor : flavors) {
                flavor.setDishId(dishId);
            }
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
    //根据类别获取菜品
    public List<Dish> listDish(Long categoryId) {
        List<Dish> dishList = dishMapper.listDish(categoryId);
        return dishList;
    }
}
